Astraist wrote:...Lowering the pressure is used in very cold conditions (=the air inside the tyre becomes more dense so the practical pressure remains identical)...
martine wrote:am I wrong in my understanding that narrow tyres are generally better for snow?
martine wrote:If I'm not wrong why does reducing the pressure help?
Gareth wrote:martine wrote:am I wrong in my understanding that narrow tyres are generally better for snow?
I also understand this to be the case, hence my winter tyre choice. People talk about narrower tyres biting into the snow better but I think they may only be describing the effect. I wonder if part of the reason is due to the shape of the contact patch. Wider tyres have a wider but shorter contact patch, which is probably better for cornering when the conditions are good. Narrower tyres have a narrower but longer contact patch which possibly is more resistant to turning, and which might help in some way in slippery conditions.
WS wrote:Narrower tyres have better grip in snow because their smaller footprint means that the car's weight is transferred onto a smaller area than in wide tyres.
Astraist wrote:...but in all of those cases -- the tyre itself is not changed: The net result is the pressure inside the tyre remains identical/
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